Telephone base unit



FIG. 1 is a top-front perspective view of a telephone base unit of the present invention;

FIG. 2 is a top-rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the drawings depict portions of the telephone base unit that form no part of the claimed design. 

CLAIM I claim the ornamental design for a telephone base unit, as shown and described. 